US1631377A - Sealing-off device - Google Patents

Sealing-off device Download PDF

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Publication number
US1631377A
US1631377A US10552A US1055225A US1631377A US 1631377 A US1631377 A US 1631377A US 10552 A US10552 A US 10552A US 1055225 A US1055225 A US 1055225A US 1631377 A US1631377 A US 1631377A
Authority
US
United States
Prior art keywords
lamp
holder
exhaust tube
sealing
finger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US10552A
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English (en)
Inventor
Loebe Walther-Winfried
Grossmann Max
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US1631377A publication Critical patent/US1631377A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/38—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels

Definitions

  • the invention relates to a device for the automatic sealing off and delivery of vacuum .and gas filled incandescent lamps and similar sealed glass vessels. Its principal ohject is to deliver the sealed off lamp, dropping it by its own weight into the conveying chute and without any turning or twisting movements which may easily cause breakage of the lamps. To this end and in 10 accordance with the invention the lamp is held, whilst being sealed ofi, in a slanting or horizontal osition by a clamplike holder which, after t clamp is drawn away from the fused exhaust tube, releases it into a conveying chute arranged between the hold ers.
  • a lamp holder comprising two movable holding fingers joined to each other by means of a pivotally mounted bar, one finger engaging the neck of the lamp and the other engaging its top, so that the lamp is clamped lengthwise between the two fingers.
  • a sealing ofli' burner movably mounted on the lamp holder or bracket adjacent the finger which engages the neck of the lamp and during the upping of the lamp holder or bracket this burner is stopped earlier than the holder by a stop. so that the distance between the sealing ofi' burner and, the adjacent finger is increased at theend. ofthe sealing ofi? operation. In this way the sealing ofi' of the exhaust tube is facilitated and the newly formed tip is so far removed from the flame that it can be well rounded off. Then too the glass parts of the lamp resting on the adjacent finger cannot be so easily endangered by the action ofthe flame of the sealing oil' burner.
  • Figure 1 is a side view of the device at the moment of receiving the lamp to be sealed off;
  • F igure2 is a partial plan .view
  • the valve 1 of the exhaust machine which may be constructed in general as shown in U. S. ,patent to Massey 996,936, July 4, 1911 95 1S turned either step by step or slowly and continuously.
  • the lamps 2 which are to be exhausted and in many cases subsequently filled with gas, are arranged in a circle on the valve, being held in a greatly inclined 7 position by their exhaust tubes 3 set into and held by heads or sockets 4 on the valve 1.
  • These heads are usually made of thick walled rubber tubing "which grips the exhaust tube firmly enough' to support the tubulated lamp.
  • the lamps will be brought in the usual manner in succession into connection with a prelimi nary exhaust pump, then with a high vacuum pump, and finally. with a gas tank, if so the lamps are to be filled'with gas.
  • the sealing and delivery device arranged at this point of the exhaustmachine comprises two relatively movable lamp holding fingers 5 and 6, which are combined into a lamp holderor bracket through a bar 7 which is pivotally mounted go on a pivot pin 8 in a support 9.
  • the lamp is gripped or clamped lengthwise between the two fingers 5 and 6 after it has come into the sealing off position.
  • the finger 5 which engages the neck of the lamp is, for this purpose, provided at the top with a plate 10, as best shown in Fig.3,- which has in it a slot 11 for the entrance of the exhaust tube 3.
  • a pivoted cover 12 which isnormally overthe slot, but is forced aside as the exhaust tube 3 enters the slot, and then drops by its own weight over the exhaust tube as a protection.
  • the finger 6 for supporting the top of the lamp is pivoted on the bar 7 and has a yieldingly supported cap 13 to engage the top of the bulb.
  • the finger 6 is under the influence of a spring 14, which tends to pull it toward the other finger 5 by swinging the finger 6 toward the lamp about its pivot pin 15.
  • a spring 14 which tends to pull it toward the other finger 5 by swinging the finger 6 toward the lamp about its pivot pin 15.
  • an arm 16, ,wh-ic carries at the top an an nular sealing off burner 17, is fiivotally mounted beside and to one side of t e fin er 5, so as to move independently of it.
  • he lamp holder or bracket is furt ermore rovided with a tail or projection 18, whic in the sealing of position (Figs.
  • elbow lever 21 bears against an adjusting screw 19 in an elbow lever 21 pivotally supported on a stationary part of the .exhaust machine;
  • the elbow lever 21 ' has a roller 22 which rides on a notched cam 23 on the exhaust valve 1 as the valve rotates, and holds or locks the lamp holder or .bracket and the sealing ofi burner 17 stationary in the position shown in Figs. 1 and 4 as long as t e roller is not in a notch 24 of cam 23.
  • the finger 6 may, in order to open the holder, be to advanta e moved to the right against the action of t e spring 14 by-the drive of the exhaust machine.
  • advanta e moved to the right against the action of t e spring 14 by-the drive of the exhaust machine.
  • a Bowden pull which comprises a tube or guide 25 in which a flexible wire 25' slides longitudinally, and is actuated by some means, such as a cam 25 which is driven in pro er time relation to the exhaust valve 21 y gearing of any well known kind, and therefore, not shown.
  • the exhaust tube 3 is softened by the .flame of the sealing 01f burner 17, which, likewise tilts a little with the lamp holder about the ivot 8.
  • the plastic exhaust tube is closed and the lamp is pulled free from that portion of the exhaust tube which remains in the head 40f the exhaust valvel, as shown in Figure 5.
  • the extent of the tipping movement of the lamp holder is limited by an adjustable stop 26', and that of the sealing off burner 17 by an adjustable" stop 27.
  • the sealingofl burner is stopped somewhat sooner than the finger 5 as the bracket tips, so that when the-tipping is completed there is a greater relative separation between the sealing ofi" burner 17 and the plate 10 than when the tipping begins,
  • the sealing off burner 17 plays along the softened point of the exhaust tube and thus insures a complete fusion.
  • the tip formed on the exhaust tube of the lamp is moved somewhat further from the reach of the flame so that although it is still sufliciently fused, it never theless can at the same time be well rounded off by the action of the flame.
  • the operation of the device is as follows: Before the approaching lamp reaches the sealing off position the lamp holder is raised .into the position shown in Figure 1 by the vbell crank lever 21.. While it is in that position the exhaust tube 3 enters the slot 11 of the arm 5, lifting cover 12 as it enters, the cover falling back into the position shown in Figure 3 when the lamp finally arrives at sealing off position. At the same time the finger 6 swings toward the lamp under the influence of the, spring 14, and the lamp is gripped, firmly by the fingers 5 and b.
  • the vbell crank lever 21 While it is in that position the exhaust tube 3 enters the slot 11 of the arm 5, lifting cover 12 as it enters, the cover falling back into the position shown in Figure 3 when the lamp finally arrives at sealing off position.
  • the finger 6 swings toward the lamp under the influence of the, spring 14, and the lamp is gripped, firmly by the fingers 5 and b.
  • the invention is not limited to the details illustrated. -The tipping movement of the lamp holder bracket, instead of being produced by its own weight, may, for example, be produced by a lever or arm controlled by a' cam disc to positively depress the lamp holder bracket in the sealing ofi' operation. Then too the sealing oil burner can be separately supported and the finger 6 be controlled by a lever system in' place of the Bowden pull.
  • the lamps be fixed in an inclined position on the rotatable exhaust valve; they may be also arranged in a horizontal position with a suitable support of the holders.
  • the new sealing oil and delivery device may be used for sealed vessels other than electric lamps, for example, gas discharge tubes, Roentgen tubes,
  • the combination with a head for holding a tubulated lamp b the end of the exhaust tube, of a lamp l iolder comprising relatively movable grippingfingers to engage the bulb of the lamp and a supporting bar for said fingers movably mounted to permit said holder to move bodily lengthwise of said exhaust tube and a heater for heating the exhaust tube adjacent said holder.
  • the combination with a head for holding a holder toward said head, and a tubulated vessel by the exhaust tube ofa holder comprising relatively movable gripping fingers mountedon a'supporting' bar pivoted to permit said holder to move bodiliy alongthe exhaust tube held in said hea and a sealing .ofi' burner mounted in posi-' tion to direct a flame upon said exhaust tube and to travel along it with said holder.
  • a device of the character described the combination with. a head for holding a' tubulated lampbulb'by the end of the ex haust tube, a heater for heating said exhaust tube adjacent the bulb, a lamp holder pivoted to swingv away from said. head by gravity and having a tail adjacent its pivot, a lever for engaging said tail to swing said cam movable with said head to actuate said lever to raise said holder into proximity to said head and then to release it to permit it to swin away from said head by gravity.
  • a lamp holder comprising relatively movable gripping fingers, said holder being mounted to swing bodily away from said head, a flexible actuating connection to one of said fingers, and

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US10552A 1924-03-14 1925-02-20 Sealing-off device Expired - Lifetime US1631377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1631377X 1924-03-14

Publications (1)

Publication Number Publication Date
US1631377A true US1631377A (en) 1927-06-07

Family

ID=7737648

Family Applications (1)

Application Number Title Priority Date Filing Date
US10552A Expired - Lifetime US1631377A (en) 1924-03-14 1925-02-20 Sealing-off device

Country Status (3)

Country Link
US (1) US1631377A (enrdf_load_stackoverflow)
FR (1) FR594948A (enrdf_load_stackoverflow)
NL (1) NL19796C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571537A (en) * 1946-08-15 1951-10-16 Gen Electric Multiple gas burner for tipping-off glass articles
US3266124A (en) * 1962-05-01 1966-08-16 Rca Corp Method of and apparatus for sealing glass-type envelopes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571537A (en) * 1946-08-15 1951-10-16 Gen Electric Multiple gas burner for tipping-off glass articles
US3266124A (en) * 1962-05-01 1966-08-16 Rca Corp Method of and apparatus for sealing glass-type envelopes

Also Published As

Publication number Publication date
FR594948A (fr) 1925-09-23
NL19796C (enrdf_load_stackoverflow)

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